28593620 has 24 divisors (see below), whose sum is σ = 65505888. Its totient is φ = 10397600.

The previous prime is 28593569. The next prime is 28593629. The reversal of 28593620 is 2639582.

It is a super-3 number, since 3×28593620³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28593629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64766 + ... + 65205.

It is an arithmetic number, because the mean of its divisors is an integer number (2729412).

Almost surely, 2^28593620 is an apocalyptic number.

28593620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28593620 is an abundant number, since it is smaller than the sum of its proper divisors (36912268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28593620 is a wasteful number, since it uses less digits than its factorization.

28593620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129991 (or 129989 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 28593620 is about 5347.3002533989. The cubic root of 28593620 is about 305.7898367527.

The spelling of 28593620 in words is "twenty-eight million, five hundred ninety-three thousand, six hundred twenty".